Topic: How many moles in the substance? (Read 3296 times)

fcb · « **on:** May 05, 2010, 02:30:25 AM »

11.2 mL of Cl₂ at STP

11.2 divided by 22.4 litres?

I got 5x10^-4

Borek · « **Reply #1 on:** May 05, 2010, 03:14:21 AM »

11.2/22.4 is not 5x10^-4, that's obvious at the first sight.

sjb · « **Reply #2 on:** May 05, 2010, 03:55:51 AM »

11.2/22.4 is not 5x10^-4, that's obvious at the first sight.

Looks like you've made one of my mistakes, Borek - check the units

fcb · « **Reply #3 on:** May 05, 2010, 04:06:31 AM »

So can I take it that 5x10^-4 as correct? If not can someone give me a hand

ChemicalForums helps me so much

thanks Borek and sjb

Borek · « **Reply #4 on:** May 05, 2010, 04:22:48 AM »

Looks like you've made one of my mistakes, Borek - check the units

Argh

Watch till the very end.

http://www.youtube.com/watch?v=eLW5jzHsW7c

Yes, 5x10^-4 is OK.

fcb · « **Reply #5 on:** May 05, 2010, 05:17:04 AM »

I orginally thought te video had something do about calculating gases etc

pleasent suprise, I watched it all too. Haha